1331121030313 has 4 divisors (see below), whose sum is σ = 1363587396948. Its totient is φ = 1298654663680.

The previous prime is 1331121030251. The next prime is 1331121030329. The reversal of 1331121030313 is 3130301211331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299765010064 + 1031356020249 = 547508^2 + 1015557^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331121030313 - 2²⁵ = 1331087475881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331121030383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16233183256 + ... + 16233183337.

It is an arithmetic number, because the mean of its divisors is an integer number (340896849237).

Almost surely, 2^{1331121030313} is an apocalyptic number.

It is an amenable number.

1331121030313 is a deficient number, since it is larger than the sum of its proper divisors (32466366635).

1331121030313 is an equidigital number, since it uses as much as digits as its factorization.

1331121030313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32466366634.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1331121030313 its reverse (3130301211331), we get a palindrome (4461422241644).

The spelling of 1331121030313 in words is "one trillion, three hundred thirty-one billion, one hundred twenty-one million, thirty thousand, three hundred thirteen".